.mad.: Can You modify "GB Atari 800" script for Altirra, to fulfill these requirements? As for “Frame Blending”, it probably needs to be enabled only for this game. If You add “DragonCart”, would be even better. The newest script to modify (incl. VBXE support) is here:

It's Gamebase compilation made by Mark Hardman, extended by me with games released in between 2016-2018. Also added a "few" of screenshots. It also includes "Combat" released at 2019.01.01. The compilation posted here has 7660 of Atari XL/XE games.